Before using, dilute to a concentration of 20mg/mL. Plasma 40 Wear Metals Wavecal Organic Solution, Matrix per Volume 75/85 Base Oil/4oz, Concentration of Element: 500mg/mL K Li, Al, Ba, B, Cd, Ca, Cr, Cu, Fe, Pb, Mg, Mn, Mo, Ni, P, Si, Ag, Na, Sn, Ti, V, Zn